Tissue cassette



FIG. 1 is a right, front perspective view of a tissue cassette showingour new design, with the top door shown in open condition;

FIG. 2 is a bottom plan view thereof;

FIG. 3 is a rear end elevational view thereof;

FIG. 4 is a left side elevational view thereof; and,

FIG. 5 is a front end view of thereof.

The ornamental design for a tissue cassette, as shown and described.